package com.atguigu.gulimall.cart.vo;

import java.math.BigDecimal;
import java.util.List;

// 整个购物车
// 需要计算的属性，必须重写他的get方法，保证每次获取属性都会进行计算
public class Cart {

    List<CartItem> items; //购物车商品

    private Integer countNum; //商品数量

    private Integer countType; //商品类型数量

    private BigDecimal totalAmount; //商品总价

    private BigDecimal reduce = new BigDecimal("0.00"); //减免价格

    public List<CartItem> getItems() {
        return items;
    }

    public void setItems(List<CartItem> items) {
        this.items = items;
    }

    public Integer getCountNum() {
        int count = 0;
        if(items!=null && items.size() > 0){
            for (CartItem item : items) {
                count += item.getCount();
            }
        }
        return count;
    }


    public Integer getCountType() {
        int count = 0;
        if(items!=null && items.size() > 0){
            for (CartItem item : items) {
                count += 1;
            }
        }
        return count;
    }

    //计算已选中的购物项 的总价 要结算已选中的购物项
    public BigDecimal getTotalAmount() {
        BigDecimal amount = new BigDecimal("0");
        //1.计算购物项总价
        if(items != null && items.size() > 0){
            for (CartItem item : items) {
               if(item.getCheck()){
                   BigDecimal totalPrice = item.getTotalPrice();
                   amount = amount.add(totalPrice);
               }
            }
        }
        //2.减去优惠总价
        BigDecimal subtract = amount.subtract(getReduce());
        return subtract;
    }

    public BigDecimal getReduce() {
        return reduce;
    }

    public void setReduce(BigDecimal reduce) {
        this.reduce = reduce;
    }
}
